arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1105.3254math.NAcs.NA
收藏

用于各向异性网格生成的新度量张量

New metric tensors for anisotropic mesh generation

Academy of Mathematics and Systems Science, CAS(中国科学院数学与系统科学研究院);Department of Mathematics, Central China Normal University(华中师范大学数学系)

Xiaobo Yin, Hehu Xie

AI总结:

提出一种基于后验误差估计的新度量张量,用于椭圆微分方程有限元解的各向异性网格自适应生成,提高了求解精度和效率。

摘要:

提出了一种新的各向异性网格自适应策略,用于椭圆微分方程的有限元求解。该策略在某些度量空间中生成各向异性自适应网格作为准均匀网格,其中度量张量基于\cite{YinXie}中提出的后验误差估计计算。新的度量张量比现有度量张量探索了真实解更全面的各向异性信息。数值结果表明,该方法可以成功应用于处理泊松问题和稳态对流主导问题。通过复杂的二维模拟的各种数值例子,说明了新度量张量相对于其他度量张量的优越精度和效率。

英文摘要:

A new anisotropic mesh adaptation strategy for finite element solution of elliptic differential equations is presented. It generates anisotropic adaptive meshes as quasi-uniform ones in some metric space, with the metric tensor being computed based on a posteriori error estimates proposed in \cite{YinXie}. The new metric tensor explores more comprehensive information of anisotropy for the true solution than those existing ones. Numerical results show that this approach can be successfully applied to deal with poisson and steady convection-dominated problems. The superior accuracy and efficiency of the new metric tensor to others is illustrated on various numerical examples of complex two-dimensional simulations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑